Clearly, from scripture; He has more than one name. But, the latest name He has revealed is Yeshua. Jesus. It means Yah's salvation. This is the only name given among men whereby you must be saved. So
right now this is the most important name you can know.
When you call Jesus Lord you are doing so unto the glory of the Father not anyone else.
And that every tongue should confess that Jesus Christ is Lord, to the glory of God the Father. (Philippians 2:11)
So, we proclaim Jesus is Lord to the glory of the only true God. Again Jesus said when you see Him you see the Father. And John taught (in his 1st epistle) whoever has the Son has the Father also, but if you deny the Son then you don't have the Father. It's really simple. The Father has revealed Himself to us in this age through the Son of God and everyone should honor the Son if they really want to honor the Father. There is no other way to come to the Father or to honor Him than through Jesus Christ.
Jesus is the invisible God revealed. He who was Spirit; made tangible. Made in the exact imprint of the image of God so we could know Him and we would not want to serve idols. The likeness of God we could only imagine before and so people made idols. Jesus is the true image of God rather than one from imagination.
I'm curious what you make of verses like these:
"I [God] said, 'You are gods, sons of the Most High, all of you.'" (Psalms 82:6)
"Jesus answered them, 'Is it not written in your Law, "I said, you are gods"?...and Scripture cannot be broken—'" (John 10:34-35)
Yes, there are many called gods but which of these "gods" are for the church? According to the scriptures there is only one God for the church. That is the Father. So He is the only God. But anyone who believes Arianism has two gods for the church. They have God the Father and another "god" the Lord Jesus Christ who is Lord of the church beneath the Father.
1 Corinthians 8:5-6
For though there be that are called gods, whether in heaven or in earth, (as there be gods many, and lords many,)
But to us there is but one God, the Father, of whom are all things, and we in him; and one Lord Jesus Christ, by whom are all things, and we by him.
So, what we believe simply brings these together as one God. The Father is the only God and He was manifest in human form as the Lord Jesus Christ. It's really simple and makes sense because the church is not supposed to have two Gods.
Yet we are commanded to honor the Son exactly as we honor the Father. (John 5:23) This cannot be unless He is equal with the Father and so we have an impasse. Either there are two Gods or else Jesus is indeed the Father manifest.